Apparatus for treating artificial threads wound on bobbins



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- W. HOHMANN armawus FOR TiiEATING ARTIFICIAL THREADS WOUND ON BOBBINS Filed Doc. 1. 1924 5 Shoots-Sheet 1 I/weA/Tar W. HOHMANN APPARATUS FOR TREATING-ARTIFICIAL THREADS WOUND ON BOBBINS Nov. 10 1925- Filodboc. 1.- 1924 3 ShoatPSheot 2 Nov. 10, 1925. I 1,560,575

W. HOHMANN APPARATUS FOR TREATING ARTIFICIAL I'HREADS WOUND on BOBBIN S F1106 Doc. 1. 1924 3 Sheets-Shut 5 I/vveA/Tor Patented Nov. 10, 1925.

UNITED STATES PATENT OFFICE.

WILHELM EOHMANN, OF DELITZSOH, NEAR HALLE, GERMANY, ASSIGNOR '1'0.AG'JL'IEiN'v GESELLSCHAFT FUR ANILIN FABRIKATION, OF BERLIN, GERMANY.

APPARATUS FOR TREATING ARTIFICIAL THREADS WOUND ON BOI BBINS.

Application filed December 1, 1924. Serial No. 753,252.

Toall whom it may concern:

Be it known that I, WILHELM HOHMANN, a subject of the German Republic, residing at Deli tzsch, near Halle, Germany, have. in-

vented certain new and useful Improvements in Apparatus for Treating Artificial Threads Wound on Bobbins, of which the following is a specification.

This invention relates to apparatus for treating artificial threads wound on bobbins.

It is the principal object of the invention to provide an apparatus of the class referred to, based upon the effect of centrifugal force to pass a wash liquid through threads wound on bobbins to obtain a thorough and rapid washing action.

A hollow spindle carries a perforated bobbin having advantageously a conical mouth to fit the spindle and a closed bottom so that it requires no bobbin holder and twisting plate and is applicable to the spindles of any spinning machine. The spindle has perforations or slots'so that as the centr fugal force due to the rotation of the bobbin quickly expels liquid from the thread fresh washing liquid will be supplied by way of the spindle and its perforations.

The liquid expelled by the centrifugal force is collected and drained away.

' Other objects of the invention will appear from the specification in connection with the accompanying drawings in which an apparatus and its parts are schematically shown particularly adapted for the process described: i

Fig. 1 shows in longitudinal section anarrangement in which an ordinary cyl1ndr1eal bobbin having the usual fixing devlces 1s used.

Figs. 2 and 3 show in longitudinal section and plan respectively asimilar arrangement having a modified liquid supply.

Figs. 4 and 5 show similar arrangements in which cup-shaped bobbins are used.

Figs. 6 and 7 show different arrangements in longitudinal section for twisting the thread simultaneously with the washing operation.

Figs; 8 and 9 show different arrangements of perforations in the wall of thebobbin.

Fig. 10 shows in longitudinal section on line AB of Fig. 11 a machine for the treatment with liquid in which provision is Y made for recovering the vapor of the liquid.

Fig. 11 is'a plan of Fig. 10 at the level F on the one side and at the level J on the other side.

Fig. 12 is a transverse section of Fig. 10.

Fig. 13 maybe a longitudinal section on line E-F of Fig. 15'of a machine for simultaneously twisting and reeling.

I Fig. 14 shows a plan of the same machine.

Fig. 15 is a transverse section on line A--B of Fig. 14.

Fig. 16 is a transverse section on line CD of Fig. 13.

Fig. 1 shows a cylindrical bobbin having a perforated wall 2 (the perforations are shown only in the upper half of the wall) and carried and centered on the spindle 1 by means of a bell 3 and a plate 4:. The free end of the spindle withm the bobbin is hollow and has a number of perforations 6. (lo-axial with the spindle and above it is the mouth of a pipe 5 from which liquid may be discharged into the hollow spindle.-

Figs. 2 and 3 show a similar bobbin mounted on a solid spindle 1. The liquid is discharged from an excentrically arranged pipe 5 so that it flows at a flat angle on to the plate 4 and enters the hollow bobbin through the openings 8 in the said plate.

In Fig. 4 the bobbin 9 is sliaped like a cup and has a conical hub 11 by means of which it is fitted on the spindle 10. The'upper edge of the wall of the bobbin is curved inwards. The liquid is discharged into the bobbin through a co-axially placed pipe 5.

Owin to the centrifugal fqrce the liquid is cause to rise up the wall of the-bobbin and to flow through the perforations in the wall thereof to pass through the thread wound upon the bobbin.

Fig. 5 shows a cup-shaped bobbin .in a' machine presently to be described. The conical hub 12 of the bobbin'9 is drawn firmly against the flange of the rotating body 14 by means of a nut 13; the lower rim of this body is toothed and is supported by the ball bearing 15. The spray rim 16 prevents the liquid from"penetrating into the gear casing formed by the two plates 17. The

liquid is introduced through the Pipe into the bobbin and is distributed by the spray 18, whereby the weight of the rotating liquid is diminished as compared with the arrange ment last described. A similar purpose is served by the openings 7 in the hell -3 of Fig. 1 which prevents the bobbin from be- ,eye 19 through which the liquid is discharged into the hollow spindle in a fine stream and finds its way to the inner surface of the bobbin. Since the greatest strain on the thread during twisting is due to friction in the twisting eye the arrangement has the advantage'that the strain is diminished owing to the wetting. of the thread by the liquid which is descending through the eye.

If, instead of the usual twisting eye there is used a funnel-shaped twisting eye 21 which is inwardly coned downwards (as shown in section in Fig. 7) fixed to a holder 22, a better guide is provided for the stream of liquid passing into the hollow spindle than is afforded by the usual twisting eye.

Figs. 8 and 9 illustrate the principle that the perforations in the wall of the. bobbin should correspond with the thickness of the layer of thread wound on the bobbin in order that there should be auniform action of the liquid throughout the whole increases from the middle towards both ends-- and at these latter places the perforations 25 are of smaller diameter than those, 24, about the middle of the bobbin. In Fig. 9 the winding 26 is cylindrical but the winding has bevelled ends 27. In this case, therefore, the size of the perforations 28 is substantially the same throughout except at the bevelled end of the winding where are a series of perforations 29 of smaller area than that of those in the middle part. A machine for applying the centrifugal process is shown in Figs. 1012. In the casing. 30. are mounted a number of spindles 31, the driving pinions 32 of which are driven by gear wheels 33 common to all the spindle gears, and themselves driven by a pinion 34; the latter is connected by coupling 35 with a shaft of motor 36. The casing contains liquid supply pipes 37 which have the form of a ring, are controlled by valves 38 and can be turned about anaxis in stuffing boxes 39. In this annular liquid supply pipe 37 there is a perforation corresponding with each hollow spindle and co-axial therewith. The liquid which has been expelled by centrifugal force collects in the bottom of the casing and runs away by pipe 40 into a drain or into a container, from which it may be pumped back through pipe 37. The casing has a hinged lid 41 which is fastened by screw 42 during the operation of the machine. At one side of the casing there is an opening to a flue pipe 43. which removes vapors evolved during the operation. This fine pipe which is controlled by a valve 44 may conduct the vapors removed by suction into a condensing or absorption system for their recovery. The whole of the spindle driving mechanism is contained in the casing 45 which is below the casing 30 and is mounted on legs 46.

The machine operates as follows:

The bobbins are mounted on the spindles and the lid 41 is closed and fastened. The motor is then started and the valves 38 and 44 are opened. WVhen the time necessary for the washing operation has elapsed the valves are closed again and the casing is opened and charged with fresh bobbins.

A machine suitable for twisting the threads from the bobbins while they are subject to the treatment with liquid as indicated in connection with Figs. 6 and 7 is shown in Figs. 13 to 16.- The frame-work 47 carries a bar 48 on which the spindles 49 are mounted in a row, each being driven by a belt from a shaft 50. Above each bob bin 51 mounted on its spindle is a twisting eye 52 and above this a nozzle 53, as shown in Figs. 6 and 7. From this twisting eye the thread is led through a guide 54 and over the reel 55, of which there is a number mounted on a driving shaft 56. The liquid flows through a pipe 57 under control of a valve 58 which'is actuated in response to angular movement of the pipe about its axis into a pipe 60 which extends along the machine being supported in brackets 59 on the frame. As indicated in Fig. 15 this pipe can be turned about its axis by handle 62; it has a number of branches 61 corresponding with the number of spindles.

This machine operates as follows:

By turning 1he handle (32 the several branch pipes 61. are brought into the position shown in dotted lines (Fig. 15) which movement also closes the passage (53 through the valve 58. The bobb ns are now mounted on the spindles and the threads laid around the drums. The pipe 60 is turned into the working position whereupon liquid flows through the open valve and is discharged through nozzles 53 and the twisting eyes into spindles which have been set in rotation. The cen-' trifuged liquid is received in the casing 64 from which it flows by pipe 65 to waste or to be pumped back through pipe 57.

The process as carried out with the apparatus described may be varied. For instance, the thread maybe twisted from the bobbin as soon as the washing begins but in that case it is advantageous .to provide a subsequent washing on the reel, because the outer layers of thread which are the first to be twisted are liable to be unsufficiently washed.

' flow through the spindle.

' last described, the liquid into which the reel dips being, however, a desulphurizing bath. Another possible combination is to use a bleaching bath or dye bath.

What I claim is,

1. Apparatus for treating artificial thread,

comprising a hollow perforated cylinder defining a bobbin, a spindle, means for.

detachably securing the bobbin to the splndle and for centering it thereon,'means for rotating the spindle and means for feeding a liquid into the interior of the bobbin.

2. Apparatus according to claim 1, in which the means for centering the cylinder defines a closure at least at cylinder.

3. Apparatus according to claim 'l, in

which the means for centering the cylinder defines closures-at both ends of the cylinder.

' 4. Apparatus according to claim 1, in

which the perforations of the cylinderare so distributed. that under the influence of centrifugal force liquid will pass to theexterior at diiferent rates along the cylinder. Apparatus for treating artificial thread, comprising a spindle, a laterally perforated bobbin on the spindle, means for feeding liquid into the interior of the spindle and means in the path of the liquid 'for twisting the thread.-

6. Apparatus for treatingartificialthread, comprising a spindle, a laterally perforated bobbin on the spindle,,mearis for rotating the spindle, a twisting eye, and means for feeding liquid into the interior of the bobbin including a nozzle directing the liquid through'the twisting eye.

7. Apparatusfor treating artificial thread,

comprlsing in combination a spindle, a

laterally perforated bobbin on the spindle,

means for reeling the thread from the spindle, and means for feeding liquid to the interior of the spindle.

8. Apparatus for treating artificial thread,

one end of the at diflerent points comprising in combination a spindle, a laterally perforated bobbin on the spindle, means for reeling the thread from the spindle, means between the reeling device and thebobbing for twisting the thread and means for feeding liquid to the interior of the bobbi-n, said feeding means being constructed and arranged to subject the thread on its way between the bobbin and the reeling device to the action of the liquid.

9. Apparatus for treating artificial thread,

comprising in combination a spindle, a

laterally perforated bobbin on the spindle, means for reeling the thread from the spindle, a twisting eye between the bobbin and the reeling device and means for feeding liquid to the interior of the bobbin including a nozzle directing a stream of the liquid through the eye.

-10. A machine for treating artificial thread, comprising a plurality of spindles carrying laterally perforated bobbins, means for rotating the spindles and means for feeding liquid into the interior'of the bobbins, including .a supply pipe mounted for angular movement toward and away from the bobbins.

i 11. A machine for treating artificial "thread, comprising a plurality of spindles carrying laterally perforated bobbins, means for rotating the spindles and means for" feeding liquid into the interior of the bob- I bins, including 'aisupply pipe mounted for 3 angularmovement about its axis and means responsive to the angular movement for con- 7,

trolling the flow of liquid to the bobbins.

12. A. machine for treating artificial bobbins, a plurality of'means' for reeling thread, comprising a plurality of laterally perforated bobbins, means for rotating the 5 between. the bobbins and the reeling means and means for feeding liquid into'the interior of the bobbins, including discharge I pipes disposed to. normally direct, the "liqguid through the twisting eyes and movable as a unit out of said normal position.

' 13. A machine for treating; artificial I thread, comprising a plurality of laterally perforated bobbins, means for rotating the bobbins, a plurality of means for reeling the thread from the bobbins, twisting eyes betweenthe bobbins and the. reeling means and means fonfeeding liquid into the interior-of the bobbins, including a supply pipe angularly movable aboutits axis and a 'plurality of. discharge pipes terminating in nozzles normally disposed to direct the liq uid through the twisting eyes. 14. Apparatus according to claim 12 ineluding means responsive'to the movement of the discharge pipes forfcontrolling the flow of liquid to the bobbins.

15. Apparatus for treating thread, comprising a hollow perforated cylinder defining a. bobbin, a ertioal spindle forrotating the bobbin, and means vfor feeding li uid into the interior of the bobbin,-inclu ing means fordistributing the liquid over the interiorsurface of the bobbin during rotation thereof.

'16. Apparatus according to claim 15, wherein the spindle extends through the forations whereby liquid fed into the hollow spindle, (luring rotation thereof is dis tributed o er the inner surface of the bob-- bin.

In testimonywhereof affix my signature. a

WILHELM HOHMANN.

bobbin and-is hollow and provided with per- 1 

